Disallow unnecessary escape usage (no-useless-escape)

Escaping non-special characters in strings and regular expressions doesn't have any effects on results, as in the following example:

let foo = "hol\a"; // > foo = "hola"
let bar = /\:/ // same functionality with /:/

Rule Details

This rule flags escapes that can be safely removed without changing behavior.

The following patterns are considered problems:

/*eslint no-useless-escape: "error"*/


The following patterns are not considered problems:

/*eslint no-useless-escape: "error"*/


When Not To Use It

If you don't want to be notified about unnecessary escapes, you can safely disable this rule.


This rule was introduced in ESLint 2.5.0.